Purdy is fine. He's exceeded expectations, but he is not someone who will win the big game for you. With all those weapons, top 4 scoring offense, top 2 scoring defense, he couldn't finish the deal. Play calling contributed, but the plays were called because of the faith the HC has in his QB.
KC has by far the lesser playmakers than SF, but everyone in America knew Mahomes was going to score a TD to win it.
We need to find the next Mahomes with this #2 pick.